关键词: 沿程阻力, 尾砂, 流变模型, 压力监测, 滑移系数

Abstract: To explore the along-path resistance characteristics of the filling slurry during the filling process，study the influence of different ash-sand ratios on the along-path resistance of filling and deter ⁃ mine the slip coefficient，rheological experiments were conducted on different filling slurries of Fankou lead-zinc mine，and a rheological model was established.The on-site measured data was collected through the pressure gauge，and the wall slip coefficient was obtained from the on-site measured data to correct the rheological model.The results show that the tailings paste belongs to Bingham fluid.The along-path resis⁃ tances of the three types of tailings all increase with the increase of the ash-sand ratio.The magnitude rela⁃ tionship is:mixed tailings (4 .99 MPa /km)>fine-grained tailings (4 .19 MPa /km)>graded tailings (3 .14 MPa/km).During the slurry transportation process，there is a phenomenon of wall slippage.Classified by the type of tailings，without considering the influence of the ash-sand ratio，the slippage coefficients of graded tailings，fine tailings and mixed tailings are 0.86，0.88 and 0.84 respectively.Based on the rheolog⁃ ical models of the three types of tailings corrected by the slip coefficient，the drag errors along the way were calculated to be 7%，4%，and 5%respectively.The rheological model corrected by the slip coeffi ⁃ cient is more accurate and has smaller errors.

Key words: resistance along the way, tailings, rheological model, pressure monitoring, slip factor